choker in WordNet English dictionary

1. a high tight collar
   choker  ruff  ruffle  neck ruff 
   
2. necklace that fits tightly around a woman's neck
   choker  collar  dog collar  neckband 
   
3. someone who kills by strangling
   garroter  garrotter  strangler  throttler  choker 
   
4. an unfortunate person who is unable to perform effectively because of nervous tension or agitation
   "he could win if he wasn't a choker"
   choker